Bosch C70 charger I Operating instructions EN
16
3.4 Overheating protection
If the device becomes too hot during the charging process, the output power and out-
put current are automatically reduced to prevent damage to the device.
3.5 Standby and reverse polarity protection
Mode Indicator Explanation
Standby
Lights up during power on and in the event of faults
Reverse polarity protection
Lights up when the terminal clamps are reversed
4 Mode selection
1. Select the desired mode by pressing the mode selection button.
2. The LED for the desired mode will light up.
3. If no further action is subsequently taken, the charging process will start after 5 sec-
onds.
Mode Output Indicator Operation Battery types
1
supported
Mode 1
Motorcycle/
car mode
14.4 V
10 A
Press the button once to se-
lect mode 1
LED 9 lights up
12 V lead acid, EFB and
most GEL batteries
Mode 2
12 V cold/
AGM mode
14.7 V
10 A
Press the button twice to
select mode 2
LEDs 9 and 11 light up
Cold state (0-4°C) of 12 V
lead acid, AGM, EFB and
GEL batteries.
Mode 3 mainte-
nance mode
2
13.6 V
5 A
Press the button three times
to select mode 3
LED 9 lights up
12 V lead acid, EFB and
most GEL batteries
Mode 4
Regeneration
mode
3
16.5 V
1.5 A
Press the button four times
to select mode 4,
LED 9 lights up
Suitable for the regenera-
tion of 12 V batteries af-
ter short-term extreme
discharge
Mode 5 voltage
maintenance
mode
4
13.6 V
Do not connect a battery.
Press and hold the mode
button for 5s to switch to
mode 5
LED 2 and LED 9 light up
Can be used to supply
the vehicle electronics
without interruption when
changing the 12 V battery
(connection to the battery
terminals on the vehicle
side)
Mode 6
Truck 24 V mode
28.8 V /
5 A
Press the button once to se-
lect mode 6
LED 10 lights up
24 V lead acid, EFB and
most GEL batteries
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